| Enkaeyewear Ltd | Wholesale & retail | 2023 |
| Enterprise X Limited | Arts & recreation | 2005 |
| Entia Trigon Limited | Other services | 2011 |
| Equiaye Ltd | Agriculture & fishing | 2017 |
| Equine Light Therapy Limited | Manufacturing | 2022 |
| Equipe Classic Racing Limited | Administrative & support | 2019 |
| Ergenica Ltd | Information & communication | 2020 |
| Esat Construction Ltd | Construction | 2025 |
| Espey Construction Limited | Construction | 2013 |
| Essex & Herts Shooting School Ltd | Arts & recreation | 2019 |
| Essex and Herts Pest Control Limited | Agriculture & fishing | 2014 |
| Essex Equestrian and Country Ltd | Wholesale & retail | 2025 |
| Essex Hvac Services Ltd | Manufacturing | 2014 |
| Essex Pelvic Health Limited | Health & social care | 2011 |
| Essex Transport & Recovery Ltd | Transport & logistics | 2026 |
| Ethan Skate Ltd | Health & social care | 2025 |
| Eulum Design Limited | Manufacturing | 2005 |
| Euram (U.K.) Limited | Professional & scientific | 1993 |
| Euro Boot Camp Limited | Arts & recreation | 2011 |
| Eusephany Limited | Information & communication | 2016 |
| EV Plumbing Ltd | Construction | 2019 |
| EVE Bloom Photography Ltd | Professional & scientific | 2025 |
| Everly Mews Management Company Limited | Households | 2022 |
| Eversley Court Southwold Limited | Households | 2015 |
| Everyday Mindfulness Ltd | Administrative & support | 2025 |
| Everything Automated Ltd | Information & communication | 2025 |
| EVO Fitness Limited | Other services | 2007 |
| Executive Advisory Ltd | Education | 2025 |
| Exhibition Labour Services Ltd | Construction | 2021 |
| Expect Fitness Coaching Ltd | Education | 2025 |
| Expertology Limited | Other services | 2010 |
| Explainme Limited | Information & communication | 2026 |
| Exportise Consultancy Limited | Transport & logistics | 1997 |
| EYE Lead Ltd | Health & social care | 2024 |
| Eyecare Andreou Limited | Health & social care | 2015 |
| Eyfs Creativity Matters Ltd | Health & social care | 2023 |
| F&C Area 25 Limited | Real estate | 2020 |
| F.G. Reynolds (Farms) Limited | Agriculture & fishing | 1961 |
| Factorfollow Limited | Wholesale & retail | 1991 |
| Fairland Associates Limited | Administrative & support | 2012 |
| Fairland Financial Consultants Limited | Administrative & support | 2023 |
| Falcao Futsal Limited | Education | 2023 |
| Falcon UK Scaffolding Ltd | Construction | 2020 |
| Family Roots Properties Ltd | Real estate | 2025 |
| Farm Fitness Ltd | Arts & recreation | 2016 |
| Farm Games Ltd | Arts & recreation | 2026 |
| Farm Girl by Sarah-Jane Limited | Wholesale & retail | 2019 |
| Farm Girl by Sarah-Jane Products Limited | Wholesale & retail | 2021 |
| Farm Girl Facial Ltd | Other services | 2022 |
| Farm Locker Ltd | Transport & logistics | 2020 |
| Farmland (Essex) Limited | Real estate | 2012 |
| Farriers Limited | Hospitality | 2015 |
| Farrmore Management Limited | Construction | 2020 |
| Farsoft Consulting Limited | Information & communication | 2015 |
| Fatfunky Ltd | Households | 2025 |
| FCS (Essex) Ltd | Wholesale & retail | 2019 |
| FE Property Management Limited | Real estate | 2022 |
| Feelgood Derma Clinic Ltd | Health & social care | 2024 |
| Felmoor Chase Management Company Limited | Extraterritorial | 2023 |
| Felsted Construction Ltd | Construction | 2004 |
| Felsted Farming Limited | Real estate | 2004 |
| Felsted Global Education Limited | Extraterritorial | 2006 |
| Felsted Place Limited | Agriculture & fishing | 2013 |
| Felsted School Trustee Limited | Professional & scientific | 1998 |
| Ferocious Fightwear Ltd | Wholesale & retail | 2023 |
| Field Labour Services Ltd | Construction | 2023 |
| Fighter Aviation Engineering Limited | Manufacturing | 2016 |
| Finance & ERP Services Limited | Professional & scientific | 2023 |
| Financealito Ltd | Financial services | 2024 |
| Financial Aviation Consulting Ltd | Financial services | 2013 |
| Find-A-Buyer Ltd | Real estate | 2025 |
| Fire and Acoustic Solutions Ltd | Construction | 2025 |
| Fire Glazing Ltd | Construction | 2021 |
| Firework Crazy Limited | Arts & recreation | 2003 |
| First Flight Films Ltd | Professional & scientific | 2018 |
| First Stop Media Ltd | Professional & scientific | 2010 |
| Fleetwood Management Team Ltd | Administrative & support | 2025 |
| Flen Consultancy Services Ltd | Professional & scientific | 2019 |
| Flen Ltd | Wholesale & retail | 2019 |
| Flenasset$ Ltd | Financial services | 2021 |
| Flencrypto Ltd | Information & communication | 2021 |
| Fleuroma Limited | Wholesale & retail | 1993 |
| Flitch Associates Ltd | Professional & scientific | 2018 |
| Flitch Enterprises Limited | Other services | 2023 |
| Flitch Green Services Limited | Other services | 2012 |
| Flitch Hand Car Wash & Mobile Services Ltd | Wholesale & retail | 2021 |
| Flitch Media Ltd | Information & communication | 2019 |
| Flitch Motors Ltd | Wholesale & retail | 2025 |
| Flitch Nails Limited | Other services | 2026 |
| Flitch Rigging & Services Ltd | Construction | 2024 |
| Flitch Travel Ltd | Administrative & support | 2023 |
| Flitchbikes Ltd | Wholesale & retail | 2015 |
| Floorless.Studio Ltd | Information & communication | 2025 |
| Flotech Heating and Plumbing Ltd | Construction | 2013 |
| Fluid View Ltd | Real estate | 2020 |
| FMC Comms Limited | Information & communication | 2012 |
| FML Store Ltd | Wholesale & retail | 2024 |
| FOG Down My Drain Limited | Extraterritorial | 2013 |
| Follow My Lead Dog Training Ltd | Other services | 2020 |
| Foort Tayler Holding Limited | Financial services | 2022 |